Records |
Author |
Stull, C.L.; Spier, S.J.; Aldridge, B.M.; Blanchard, M.; Stott, J.L. |
Title |
Immunological response to long-term transport stress in mature horses and effects of adaptogenic dietary supplementation as an immunomodulator |
Type |
Journal Article |
Year |
2004 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
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Volume |
36 |
Issue |
7 |
Pages |
583-589 |
Keywords |
horse; transportation; Cd+; lymphocytes; stress; cortisol; adaptogens |
Abstract |
Reasons for performing study: Little information exists on the immunological effects of transport or the use of supplements to minimise transport stress. Objectives: To establish baseline ranges and evaluate immunophenotypic and functional changes associated with transport and a nutritional ‘adaptogen’ supplement. Methods: Horses received either supplement (n = 10) or placebos (n = 9) during the 30 day study. After 28 days in stalls, 12 horses (6 supplement; 6 placebo) were transported for 24 h, then unloaded and recovered. Venous blood samples were collected on Days 1, 14 and 28 to establish baselines, and on Days 28, 29 and 30 to examine changes during transport and recovery. Results: Transport prompted elevations (P<0.05) in cortisol concentration, neutrophil count and white blood cell counts, while lymphocyte subpopulation counts (CD3+, CD4+, CD8+, CD21+) decreased (P<0.05). Normal phenotypic lymphocyte profiles returned within 24 h of recovery. Supplement effects on immunophenotype (CD21+ and CD8+) were observed in stabled horses (P<0.05), but not in transported horses. Conclusions: These results provide insights into the immunological mechanisms associated with long-term transport. Potential relevance: The existence of a small window of immunological uncertainty follows long-term transportation, enhancing the potential risk of infectious disease in susceptible individuals. |
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Blackwell Publishing Ltd |
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ISSN |
2042-3306 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5845 |
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Author |
Tavernor, W.D.; Lees, P. |
Title |
A pharmacological investigation of the influence of suxamethonium on cardiac function in the horse |
Type |
Journal Article |
Year |
1968 |
Publication |
Experientia |
Abbreviated Journal |
Experientia |
Volume |
24 |
Issue |
6 |
Pages |
582-583 |
Keywords |
Animals; Arrhythmia/chemically induced; Consciousness; Halothane; Heart/innervation; Heart Rate/*drug effects; Horses/*physiology; Oxygen; Propranolol/pharmacology; Receptors, Sensory/drug effects; Stimulation, Chemical; Succinylcholine/antagonists & inhibitors/*pharmacology; Sympathetic Nervous System/physiology; Tachycardia/chemically induced; Thiopental |
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ISSN |
0014-4754 |
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PMID:5697737 |
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no |
Call Number |
refbase @ user @ |
Serial |
104 |
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Author |
Hintz, R.L. |
Title |
Genetics of performance in the horse |
Type |
Journal Article |
Year |
1980 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
Volume |
51 |
Issue |
3 |
Pages |
582-594 |
Keywords |
Animals; Exertion; Horses/*genetics/physiology; Sports |
Abstract |
Criteria used to measure performance, environmental factors that influence performance and estimates of heritability are needed to estimate genetic differences. Published heritability estimates of various measures of performance in the horse are summarized. The average heritability estimates of pulling ability and cutting ability are .25 and .04, respectively. Heritability estimates are .18, .19 and .17 for log of earnings from jumping, 3-day event and dressage performance, respectively. Heritability estimates of performance rates, log of earnings, earnings, handicap weight, best handicap weight, time and best time for the Thoroughbred are .55, .49, .09, .49, .33, .15 and .23, respectively. Heritability estimates of log of earnings, earnings, time and best time for the trotter are .41, .20, .32, and .25, respectively. The heritability estimate of best time for the pacer is .23. The effectiveness of selection will depend on which performance trait is to be improved. |
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0021-8812 |
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PMID:7440446 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
3758 |
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Author |
Houpt, T.R.; Houpt, K.A. |
Title |
Nitrogen conservation by ponies fed a low -protein ration |
Type |
Journal Article |
Year |
1971 |
Publication |
American journal of veterinary research |
Abbreviated Journal |
Am J Vet Res |
Volume |
32 |
Issue |
4 |
Pages |
579-588 |
Keywords |
Administration, Oral; Amino Acids/biosynthesis; Animals; Anti-Infective Agents/pharmacology; Body Weight/drug effects; Dietary Proteins/*pharmacology; Horses/*metabolism; Nitrogen/*metabolism; Urea/administration & dosage/antagonists & inhibitors/metabolism; Water/metabolism |
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ISSN |
0002-9645 |
ISBN |
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Notes |
PMID:5110116 |
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no |
Call Number |
refbase @ user @ |
Serial |
62 |
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Author |
Christensen, H.A.; Herrer, A. |
Title |
Attractiveness of sentinel animals to vectors of leishmaniasis in Panama |
Type |
Journal Article |
Year |
1973 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
Volume |
22 |
Issue |
5 |
Pages |
578-584 |
Keywords |
Animals; Cricetinae; Dogs; Ecology; Horses; *Insect Vectors; Leishmania/isolation & purification; Leishmaniasis, Mucocutaneous/*etiology; Male; Panama; *Phlebotomus; Rats |
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English |
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ISSN |
0002-9637 |
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Notes |
PMID:4729738 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2712 |
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Author |
Enileeva, N.K. |
Title |
[Ecological characteristics of horse stomach botflies in Uzbekistan] |
Type |
Journal Article |
Year |
1987 |
Publication |
Parazitologiia |
Abbreviated Journal |
Parazitologiia |
Volume |
21 |
Issue |
4 |
Pages |
577-579 |
Keywords |
Animals; Diptera/*physiology; Ecology; Female; Flight, Animal; Horses/*parasitology; Larva/physiology; Male; Population Dynamics; Uzbekistan |
Abstract |
The paper describes the flight periods and dynamics of abundance of horse botflies, life span of females and males, effect of environmental factors on the activity of flies and their behaviour, potential fecundity of different species of botflies, duration of embryonal development, preservation of viability of larvae in egg membranes, localization of different stages of botflies in the host, and methods of their control. |
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Language |
Russian |
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Original Title |
Ekologicheskie osobennosti zheludochnykh ovodov loshadei v Uzbekistane |
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0031-1847 |
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Notes |
PMID:2958767 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2680 |
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Author |
Waters, A.J.; Nicol, C.J.; French, N.P. |
Title |
Factors influencing the development of stereotypic and redirected behaviours in young horses: findings of a four year prospective epidemiological study |
Type |
Journal Article |
Year |
2002 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
Volume |
34 |
Issue |
6 |
Pages |
572-579 |
Keywords |
Age Factors; Animal Husbandry/*methods; Animal Welfare; Animals; *Behavior, Animal; Female; Horse Diseases/epidemiology/prevention & control/*psychology; Horses; Housing, Animal; Longitudinal Studies; Male; Prevalence; Prospective Studies; Risk Factors; *Stereotyped Behavior; Weaning |
Abstract |
Stereotypies are invariant and repetitive behaviour patterns that seemingly have no function, which tend to develop in captive animals faced with insoluble problems and may be indicative of reduced welfare. A 4 year prospective study of the factors influencing the development of stereotypic and redirected behaviours (abnormal behaviour) in a population of 225 young Thoroughbred and part-Thoroughbred horses was conducted between 1995 and 1999. Abnormal behaviour affected 34.7% of the population. Multivariable analysis showed that foals of low- or middle-ranking mares were less likely to develop abnormal behaviour than foals of dominant mares (rate ratio (RR) 0.23, P<0.01; RR 0.48, P<0.01, respectively). Weaning by confinement in a stable or barn was associated with an increased rate of development of abnormal behaviour, compared with paddock-weaning (RR 2.19, P<0.05), and housing in barns, rather than at grass after weaning, was associated with a further increase (RR 2.54, P<0.01). Specific stereotypic and redirected behaviours were then considered as separate outcomes. Crib-biting was initiated by 10.5% of horses at median age 20 weeks, weaving by 4.6% of horses at median age 60 weeks, box-walking by 2.3% of horses at median age 64 weeks and wood-chewing by 30.3% of horses at median age 30 weeks. Wood-chewing developed at a lower rate in horses born to subordinate or mid-ranking mares than in horses born to dominant mares (RR 0.29, P<0.01; RR 0.41, P<0.01, respectively), and at a higher rate in horses kept in barns or stables rather than at grass after weaning (RR 4.49, P<0.001; RR 1A6, P<0.001, respectively). Feeding concentrates after weaning was associated with a 4-fold increase in the rate of development of crib-biting (RR 4.12, P = 0.02). The results of this study support the idea that simple changes in feeding, housing and weaning practices could substantially lower the incidence of abnormal behaviour in young horses. |
Address |
University of Bristol, Department of Clinical Veterinary Science, Langford, Bristol, UK |
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English |
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Series Editor |
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Edition |
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ISSN |
0425-1644 |
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Notes |
PMID:12357996 |
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no |
Call Number |
refbase @ user @ |
Serial |
84 |
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Author |
Anderson, T.M.; McIlwraith, C.W.; Douay, P. |
Title |
The role of conformation in musculoskeletal problems in the racing Thoroughbred |
Type |
Journal Article |
Year |
2004 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
Volume |
36 |
Issue |
7 |
Pages |
571-575 |
Keywords |
Animals; Carpus, Animal/anatomy & histology/physiology; Horse Diseases/etiology/*pathology/surgery; Horses/*anatomy & histology/injuries/physiology; Likelihood Functions; Logistic Models; Muscle, Skeletal/*anatomy & histology/pathology; Musculoskeletal Diseases/pathology/surgery/*veterinary; Tarsus, Animal/anatomy & histology/physiology; Treatment Outcome |
Abstract |
REASONS FOR PERFORMING STUDY: The relationship of conformation to future potential injury is a standard approach in practise but, at present, is largely based on subjective observations. OBJECTIVE: To measure conformation in 3-year-old Thoroughbreds and objectively test its relationship with the occurrence of musculoskeletal problems. METHODS: Conformation measurements were taken from photographs using specific reference points marked on the horses and processed on the computer. Clinical observations were recorded for each horse on a regular basis. Stepwise (forward) logistic regression analysis was performed to investigate the relationship between the binary response of the clinical outcomes probability and the conformation variables by the method of maximum likelihood. RESULTS: Clinical outcomes significantly (P<0.05) associated with conformational variables included effusion of the front fetlock, effusion of the right carpus, effusion of the carpus, effusion of the hind fetlock, fracture of the left or right carpus, right front fetlock problem and hind fetlock problem. CONCLUSIONS: Offset knees (offset ratio) contributed to fetlock problems. Long pasterns increased the odds of a fracture in the front limb. An increase in the carpal angle as viewed from the front (carpal valgus) may serve as a protective mechanism, as the odds for a carpal fracture and carpal effusion decreased with an increase in the carpal angle. POTENTIAL RELEVANCE: This study demonstrates relationships between conformation and musculoskeletal disease in the racehorse. The information may be useful in selection and management of the racing Thoroughbred. |
Address |
Colorado State University, Equine Science and Equine Orthopaedic Research Programs, Fort Collins, Colorado 80523, USA |
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English |
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0425-1644 |
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PMID:15581320 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
3697 |
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Author |
Morgan, K.; Funkquist, P.; Nyman, G. |
Title |
The effect of coat clipping on thermoregulation during intense exercise in trotters |
Type |
Journal Article |
Year |
2002 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Veterinary Journal |
Volume |
34 |
Issue |
S34 |
Pages |
564-567 |
Keywords |
horse; thermoregulation; heat loss; recovery; blood temperature; oxygen uptake |
Abstract |
Summary The aim of this study was to study the physiological, especially thermoregulatory, responses during intense exercise in the clipped horse compared to the horse with winter coat. Six Standardbred trotters were studied before and after clipping. They performed an inclined incremental high intensity treadmill exercise test and were monitored during recovery. The clipped horse differed significantly (ANOVA) during exercise as compare to coated: less increase in central venous blood temperature, higher skin surface temperature, greater difference skin to ambient temperature and higher rate of nonevaporative heat loss. The clipped horse had significantly lower total cutaneous evaporative heat loss from walk to end of peak exercise and a shorter time for recovery for the respiratory rate using a paired t test. The clipped horse showed a tendency (P = 0.059) to decreased oxygen uptake during the stepwise increase in workload. We concluded that the clipped horse experienced less strain on the thermoregulatory system due to an enhanced heat loss. Some clipped horses in the study showed a more efficient power output; future studies with emphasis on respiration and oxygen demand are needed to explain this. |
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American Medical Association (AMA) |
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0425-1644 |
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Notes |
doi: 10.1111/j.2042-3306.2002.tb05484.x |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
6614 |
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Author |
Crowell-Davis, S.L.; Houpt, K.A. |
Title |
Maternal behavior |
Type |
Journal Article |
Year |
1986 |
Publication |
The Veterinary clinics of North America. Equine practice |
Abbreviated Journal |
Vet Clin North Am Equine Pract |
Volume |
2 |
Issue |
3 |
Pages |
557-571 |
Keywords |
Aggression; Animals; Animals, Wild; Female; *Horses; Lactation; *Maternal Behavior; Pregnancy; *Pregnancy, Animal; Rejection (Psychology) |
Abstract |
Parturition in mares is rapid and is followed by a brief period of sensitivity to imprinting on a foal. There is large individual variation in normal maternal style, but normal mothers actively defend their foal, remain near the foal when it is sleeping, tolerate or assist nursing, and do not injure their own foal. Disturbance of a mare and foal during the early imprinting period can predispose a mare to rejection of her foal; therefore, it should be avoided. There are a variety of forms of foal rejection and numerous etiologies. Therefore, each case should be evaluated individually. |
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Edition |
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ISSN |
0749-0739 |
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Notes |
PMID:3492245 |
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no |
Call Number |
refbase @ user @ |
Serial |
49 |
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